Table 1.

Liposome Diameter and Zeta-Potential of NTA-Containing Liposomes with 3, 1 or 0.3% NTA and 5 mol % mPEG or 1% NTA without mPEG. Control liposomes contained 1.5 mol % POPG to mimic the charge of 0.3% NTA-containing liposomes. (n=3)

	3% NTA, 5% mPEG	1% NTA, 5% mPEG	1% NTA, 0% mPEG	0.3% NTA, 5% mPEG
	tris-NTA-DAP
Diameter (nm)	88.0 ± 6.4	82.1 ± 2.5	88.3 ± 6.6	95.2 ± 15.1
ζ potential (mV)	−21.0	−18.3 ± 2.7	−18.6 ± 1.3	−19.3
	tris-NTA-LYS
Diameter (nm)	107.9 ± 3.8	96.0 ± 11.5	96.6 ± 12.1	82.9 ± 7.6
ζ potential (mV)	−22.8	−18.6 ± 0.2	−20.1	−15.3
	NTA-DOGS
Diameter (nm)	78.7 ± 14.7	75.4 ± 12.3	85.0 ± 7.8	71.5 ± 1.0
ζ potential (mV)	−18.9	−16.9 ± 0.6	−16.1	−12.6
	Control (1.5% POPG, 5% mPEG)
Diameter (nm)	80.5 ± 6.5
ζ potential (mV)	−15.6 ± 1.6